1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/HTMLInputElement.h"
#include "mozilla/dom/RadioGroupContainer.h"
#include "mozilla/dom/TreeOrderedArrayInlines.h"
#include "mozilla/Assertions.h"
#include "nsIFrame.h"
#include "nsIRadioVisitor.h"
#include "nsRadioVisitor.h"
namespace mozilla::dom {
/**
* A struct that holds all the information about a radio group.
*/
struct nsRadioGroupStruct {
nsRadioGroupStruct()
: mRequiredRadioCount(0), mGroupSuffersFromValueMissing(false) {}
/**
* A strong pointer to the currently selected radio button.
*/
RefPtr<HTMLInputElement> mSelectedRadioButton;
TreeOrderedArray<RefPtr<HTMLInputElement>> mRadioButtons;
uint32_t mRequiredRadioCount;
bool mGroupSuffersFromValueMissing;
};
RadioGroupContainer::RadioGroupContainer() = default;
RadioGroupContainer::~RadioGroupContainer() {
for (const auto& group : mRadioGroups) {
for (const auto& button : group.GetData()->mRadioButtons.AsList()) {
// When the radio group container is being cycle-collected, any remaining
// connected buttons will also be in the process of being cycle-collected.
// Here, we unset the button's reference to the container so that when it
// is collected it does not attempt to remove itself from a potentially
// already deleted radio group.
button->DisconnectRadioGroupContainer();
}
}
}
/* static */
void RadioGroupContainer::Traverse(RadioGroupContainer* tmp,
nsCycleCollectionTraversalCallback& cb) {
for (const auto& entry : tmp->mRadioGroups) {
nsRadioGroupStruct* radioGroup = entry.GetWeak();
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(
cb, "mRadioGroups entry->mSelectedRadioButton");
cb.NoteXPCOMChild(ToSupports(radioGroup->mSelectedRadioButton));
uint32_t i, count = radioGroup->mRadioButtons->Length();
for (i = 0; i < count; ++i) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(
cb, "mRadioGroups entry->mRadioButtons[i]");
cb.NoteXPCOMChild(ToSupports(radioGroup->mRadioButtons->ElementAt(i)));
}
}
}
size_t RadioGroupContainer::SizeOfIncludingThis(
MallocSizeOf aMallocSizeOf) const {
return mRadioGroups.SizeOfIncludingThis(aMallocSizeOf);
}
nsresult RadioGroupContainer::WalkRadioGroup(const nsAString& aName,
nsIRadioVisitor* aVisitor) {
nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
for (HTMLInputElement* button : radioGroup->mRadioButtons.AsList()) {
if (!aVisitor->Visit(button)) {
return NS_OK;
}
}
return NS_OK;
}
void RadioGroupContainer::SetCurrentRadioButton(const nsAString& aName,
HTMLInputElement* aRadio) {
nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
radioGroup->mSelectedRadioButton = aRadio;
}
HTMLInputElement* RadioGroupContainer::GetCurrentRadioButton(
const nsAString& aName) {
return GetOrCreateRadioGroup(aName)->mSelectedRadioButton;
}
nsresult RadioGroupContainer::GetNextRadioButton(
const nsAString& aName, const bool aPrevious,
HTMLInputElement* aFocusedRadio, HTMLInputElement** aRadioOut) {
*aRadioOut = nullptr;
nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
// Return the radio button relative to the focused radio button.
// If no radio is focused, get the radio relative to the selected one.
RefPtr<HTMLInputElement> currentRadio;
if (aFocusedRadio) {
currentRadio = aFocusedRadio;
} else {
currentRadio = radioGroup->mSelectedRadioButton;
if (!currentRadio) {
return NS_ERROR_FAILURE;
}
}
int32_t index = radioGroup->mRadioButtons->IndexOf(currentRadio);
if (index < 0) {
return NS_ERROR_FAILURE;
}
int32_t numRadios = static_cast<int32_t>(radioGroup->mRadioButtons->Length());
RefPtr<HTMLInputElement> radio;
do {
if (aPrevious) {
if (--index < 0) {
index = numRadios - 1;
}
} else if (++index >= numRadios) {
index = 0;
}
radio = radioGroup->mRadioButtons->ElementAt(index);
} while ((radio->Disabled() || !radio->GetPrimaryFrame() ||
!radio->GetPrimaryFrame()->IsVisibleConsideringAncestors()) &&
radio != currentRadio);
radio.forget(aRadioOut);
return NS_OK;
}
HTMLInputElement* RadioGroupContainer::GetFirstRadioButton(
const nsAString& aName) {
nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
for (HTMLInputElement* radio : radioGroup->mRadioButtons.AsList()) {
if (!radio->Disabled() && radio->GetPrimaryFrame() &&
radio->GetPrimaryFrame()->IsVisibleConsideringAncestors()) {
return radio;
}
}
return nullptr;
}
void RadioGroupContainer::AddToRadioGroup(const nsAString& aName,
HTMLInputElement* aRadio,
nsIContent* aAncestor) {
nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
radioGroup->mRadioButtons.Insert(*aRadio, aAncestor);
if (aRadio->IsRequired()) {
radioGroup->mRequiredRadioCount++;
}
}
void RadioGroupContainer::RemoveFromRadioGroup(const nsAString& aName,
HTMLInputElement* aRadio) {
nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
MOZ_ASSERT(
radioGroup->mRadioButtons->Contains(aRadio),
"Attempting to remove radio button from group it is not a part of!");
radioGroup->mRadioButtons.RemoveElement(*aRadio);
if (aRadio->IsRequired()) {
MOZ_ASSERT(radioGroup->mRequiredRadioCount != 0,
"mRequiredRadioCount about to wrap below 0!");
radioGroup->mRequiredRadioCount--;
}
}
uint32_t RadioGroupContainer::GetRequiredRadioCount(
const nsAString& aName) const {
nsRadioGroupStruct* radioGroup = GetRadioGroup(aName);
return radioGroup ? radioGroup->mRequiredRadioCount : 0;
}
void RadioGroupContainer::RadioRequiredWillChange(const nsAString& aName,
bool aRequiredAdded) {
nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
if (aRequiredAdded) {
radioGroup->mRequiredRadioCount++;
} else {
MOZ_ASSERT(radioGroup->mRequiredRadioCount != 0,
"mRequiredRadioCount about to wrap below 0!");
radioGroup->mRequiredRadioCount--;
}
}
bool RadioGroupContainer::GetValueMissingState(const nsAString& aName) const {
nsRadioGroupStruct* radioGroup = GetRadioGroup(aName);
return radioGroup && radioGroup->mGroupSuffersFromValueMissing;
}
void RadioGroupContainer::SetValueMissingState(const nsAString& aName,
bool aValue) {
nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
radioGroup->mGroupSuffersFromValueMissing = aValue;
}
nsRadioGroupStruct* RadioGroupContainer::GetRadioGroup(
const nsAString& aName) const {
nsRadioGroupStruct* radioGroup = nullptr;
mRadioGroups.Get(aName, &radioGroup);
return radioGroup;
}
nsRadioGroupStruct* RadioGroupContainer::GetOrCreateRadioGroup(
const nsAString& aName) {
return mRadioGroups.GetOrInsertNew(aName);
}
} // namespace mozilla::dom
|
